Feed e



(No Model.)

- F. E. DERRICK & S. G. BROTT.

ELECTRIC. ALARM GLOGK.

No. 351,746. Patented Nov. 2, 1886.

NY PETERS, Phnlo-Lllflngmplmr, Washington. D c.

UNITED STATES PATENT OFFI E.

FRED E. DERRICK AND SOLOMON O. BROTT, OF LANSINGBURG, NE\V YORK.

ELECTRIC ALARM-CLOCK. A

SPECIPIGATIONforming part of Letters Patent No. 351,746, dated November2, 1886.

Application file i August 30, 1886. Serial No. 212,188. (No model.)

To all whom it may concern.-

Be it known that we, FRED E. DERRICK and SOLOMON C. Bao'r'r, citizens ofthe United States, residing in the village of Lansingburg, in thecount-y ot' Rensselaer and State of New York, have jointly inventedcertain new and useful Improvements in Electric Alarm- Olocks, of whichthe following is a specification, reference being had to theaccompanying drawings.

The general objects of our improvements are to furnish a clock havingmechanism for Operating an alarm at a predetermined time with electriccontacts and means for causing the action of the winding-shaft of thealarmoperating mechanism in running down to establish electricconnection between said contacts, and thereby close an electric circuitembracing said contacts, an electric source, and an electromagneticalarm, to provide means for readily establishing and breaking electricconnection between said electric contacts of the clock and the terminalconductors of an electric circuit embracing an electro-magnetic alarmand electric source, and to provide means by which the winding-shaft ofthe alarmoperating mechanism. of the clock can be caused to eitherestablish or not establish electric connection between said electriccontacts when the winding-shaft runs down.

In the "aforesaid drawings, Figure 1 represents the front side of amechanical alarmclock, an electric source or galvanic battery, and aself-acting electromagnetic alarm, each of a kind common in market, allconnected together by electric conductors and embodying one form of ourinvention. Fig. 2 is an elevation of the rear side of the clock showninFig. 1, with one form of a portion of our invention applied thereto; andFi 3 shows'on a larger scale parts of the same clock and its support inelevation and in partial section at the line 2 z in Figs. 1. and 2, asviewed in the direction of the arrow Fig. 4 is an elevation of the rearside of the same clock shown in Figs. 1 and 2, with modified parts ofour invention applied thereto, and Fig. 5 showson a larger scale partsof the same and a partial section at about the line a: w in Fig. 4,viewed in the direction of the arrow to. Fig. 6 shows a portion of therear side of the same clock with modified parts of our invention. Fig. 7rep resents the rear side of another mechanical alarm-clock of a commonkind with one form of a portion of our invention applied to the clockand Fig. Sshows on a larger scale a sectional elevation of parts of thesame at about the line a c in Fig. 7 as seen in the direction of'thearrow at. Fig. 9 showsthe rear side of another mechanical alarm-clock ofa common kind with another form of a portion of our in- Vention, andFig. 10 shows a part of the same on a larger scale, viewed in thedirection of the arrow t. Fig. 11 shows a part of the rear side of thealarm clock represented in Figs. 1 6 5 electromagnetic alarm can beclose together, 7 5

or at any desirable distances apart, and are to be connected together byany suitable electric conductors, as b.

O is a common switch or button, by which the electric circuit can beconveniently broken and closed by hand.

Dis the usual windingshat't of the alarm mechanism, which can be of anyordinary or suitable kind,having an hour-circle and index and retainingand releasing parts, the sameas in the common and well-known mechanicalalarm-clocks. The shaftD has a laterallyprojecting metallic key, arm, orpart, E, by which that shaft and the alarm mechanism are wound up byhand, as usual. anism and winding-shaft run down, the shaft and its keyor arm turn in the direction ofthe arrows.

To provide means for causing the action of thewinding-shat't of thealarm mechanism to 9 5 close an electric circuit when that shaft runsdown,or is stopped in its runningdown movement, we furnish the clockwith a stop, against which the key or arm on the winding-shaft shallstrike and be arrested with the shaft in running down, and with twoelectric contact pieces, one insulated from the other and so arwhichwill 0 When the alarm mecho ranged in respect to the winding-shaft withits key or arm that when they are arrested in running down by saidstops, electric connectionshall be thereby established between the twoelectric contactpieces in any manner,substantially as hereinaftersetforth. The metallic key or arm E on the windingshaft D can serve asone of said electric contacts, and then has electric connection with theclock-case A by the metallic shaft D and the metallic gearingframe,which supports the shaft and is socured in metallic contact with thecase, as usual in such clocks.

F is the other electric contact-piece, which is mounted 011 the case A,and is insulated therefrom, as indicated by the heavy black parts 1',and is thus insulated from the key or contactpiece E on thewinding-shaft when it is suitably wound up, as shown by full linesinFigs. 6, 7, 9, and 11, and by dotted linesin Figs. 2 and t.

In Figs. 2, 4, 7, and 9 the contact-piece F serves as a stop, againstwhich the part E on the winding-shaft D strikes, and is stopped in itsrunning-down movement, and thereby establishes electric connectionbetween the two contact-pieces.

In Fig. ll. a metallic spring contact-piece, e, is secured to and inmetallic connection with the case A, and extends between the insulatedcontact F and the arm E on the winding-shaft. When the shaft is wound upsuitably,the part E is away from the spring part c, which is then awayfrom the part F,-as shown in full lines. \Vhcn the alarm mechanism ofthe clock is released and the winding-shaft D runs down, the part E ofthe shalt strikes against the spring-piece e and presses and holds itagainst the part F, and is thereby stopped in its running-down movement,and thus by its action establishes electric connection between thecontact-pieces F and c.

In Fig. (if is a metallic spring-piece, which is secured to andinsulated from the case A, and is separate from the insulated part F onthe case. Vhen the shaft D is suitably wound up, the part B on the shaftis away from the parts f and F, as shown in full lines. hen the shaft isreleased and runs down, the metallic part E first meets and bends thespring f, and next, while in contact with the spring, comes in contactwith and is stopped by thepart F, and thus establishes electricconnection between the parts E and j, and between the parts E and F, andbetween the parts F and f. By having the spriug f sufficiently stiff itwill stop the running-down movement of the part E, so as to establishelectric connection between the parts E and f only. Upon removing thepart f the part E will be arrested by and held against the part F, sothat electric connection will then be established between the parts Eand F only.

To provide means for readily connecting the two terminal conductors ofan electric circuit embracing an electric source and an electrical alarmwith the aforesaid two electric contacts on the clock, we secure uponthemetallic clock-case two attachments which are respectively adapted toreceive and form electric connection with the-two terminal conductors,andhave one of said attachments in electric connect-ion with theclock-case and with one of the two electric contacts, and the otherattachment insulated from the case and in electric connection with theother of said electric contacts.

In the drawings one such attachment, G, is shown secured to and inmetallic connection with the clock-case, and thereby in electricconnection with the contact-piece E or c, as hereinbefore specified, andthe other attachment, H, is shown secured to and insulated from the caseby the parts 1', and in metallic connection with the contact piece F,which is secured to that attachment.

In Figs. 4: and 9 the attachments G and II are like commonbinding-posts, and are adapted to receive and clamp fast the wire orpinform terminals, as p 1, of the electriccircuit conductors.

In Fig. 4 the parts G and II are shown arranged so that the clock can bethereby suspended from the conductor terminals.

In Figs. 1, 2, 3, t3, 7, and 11 the attachments G H are in the form ofeyes, rings, or hooks g h, by which the clock can be freely suspended,as shown in Fig. 1, from two conductor terminals in the form of pins orhooks q, Figs. 1 and 3, secured at a suitable distance apart to andprojecting from an insulatingsupport, I, so that electric connectionshall be instantly established between said terminals and the electriccontacts of the clock by mere- 1y hanging up the clock by its said ringor hook attachments from the correspondingly spaced conductor terminals,as indicated in Figs 1 and 3.

'When theterminal conductors of the electric circuit through the battery13 and electric alarm O are respectively connected with the attachmentsG- and H, which are respectively in metallic connection with thecontact-pieces E,or e and F,in the clocks represented in Figs. 2, 4, 6,7, 9, and 11, the circuit will be completed when the windingshaft D runsdown, and thereby moves and holds its part E in contact with the part Fin Figs. 2, 4, 6, 7, and 9, or thepart c in contact with the partFinFig. 11. When the circuit terminals are connected with the attachments Gand H in Fig. 6, the circuit will be completed when the shaft runs downand its part E is stopped by the part F orfand in contact with the partfin metallic connection with the attachment H; and when the circuitterminals are connected with the attachments H and II, Fig. 6, thecircuit will be completed when the winding-shaft runs down and itsmetallic partE is stopped by and in contact with the parts Fand f. \Vhenthe circuit is thus closed through the battery and electric alarm by theaction. of the windingr 351,746 i a shaft of the alarm mechanism when itruns down, the electric alarm will continue to act until the batterybecomes too weak to operate the alarm, or until the circuit isbroken,which breaking of the circuit can be conveniently accomplished byhand by means of the switch 0 in circuit, and preferably away from theclock and near the electric alarm. Commonly, the electric alarm andswitch will be in the sleepirig-apartment and the clock in a distantroom. The circuit is to be left open at the switch until, and thereclosed by hand when, the winding-shaft of the alarm mechanism shall beby hand turned back or wound up a portion of a revolution by the key orpart E, and retained by the alarm mechanism of the clock away from thepart F, and ready to be released to run down at a predetermined timeindicated by the alarm-setting dial and index on the clock.

Vhen the electric alarm is used and operated in connection with analarm-clock, as

above described, the mechanical alarm of the clock may strike by itshammer J on the bell K while the winding-shaft runs down to its stop orthe hammer or the bell, or the bell and hammer may be absent from thealarm mechanism of the clock.

To provide means by which the windingshaft of the alarm mechanism inrunning down can be. caused to stop and to close the electric circuit ofan electric al'arm,as above described, or to freely run down and causean alarm to be sounded by the alarm mechanism of the clock alone, wemake one or the other, or both, ofthe two electric contact-pieces on theclock or the arm or key on the winding-shaft, suitably adjustable. Forthis purpose the contact-piece F in FigsQ and 3 can be turned to and froand held on its supporting-stem 0, Fig. 3, from its position in fulllines in Fig. 2 to itsplaee in dotted lines at a, where it will be outof the path of the part Eon the winding-shaft.

In Figs. 4 and 5 the attachment H with the stop-piece F can be slid toand fro and secured on the rim m of the cloclcease from its place infull lines in Fig. 4 to where it is shown by dotted lines at Z.

In Figs. 9 and 10 the key E is pivoted in the head of the shaft D, andwhenturned up, as shown by dotted lines at is in Fig. 10, will pass overwithout touching the screw-stop F, which latter can be turned back, asindicated by dotted lines at 9', so as to be out of the path of the partE when it is turned down, as shown in. full lines.

In Figs. 7 and 8 the part E is a doubleheaded screw-stem fitting in afemale screw, through the head of the winding-shaft, so that the part Ecan be turned with endwise movement to and fro from its extendedposition shown by full lines to its place in dotted lines at t in Fig.7, where it will not come in contact with the part F in the rotation ofthe winding-shaft.

In Figs. 6 and 11 the stem E fits and is mov able to and fro radially inasoeket through the head of the winding-shaft, which. is furnished witha clampscrew, d, by which the part E canbe fastened when extended, asshown in full lines, and when retracted, as indicated by dotted lines,at 0, so as to nottoueh either of the parts F, f, ore, as thewinding-shaft revolves.

In Fig. 1 the electric conductors b are shown connecting one pole of thebattery B with one metallic clock-supporting pin or hook, q, andconnecting the other pole of the battery with the electric alarm O, andthat alarm with the handswitch O, and the latter with the other metallicclock-support, 1).

We claim as our invention 1. An alarm-clock furnished with a stop forarresting the key or arm of the winding-shaft of the alarm mechanism inits running-down movement, andwit-h two electric contacts, between whichelectric connection is established by the action of said key or arm whenarrested by said stop, substantially as set forth.

2. An alarm clock furnished with a stop for arresting the key or arm onthe winding-shaft of the alarm mechanism in running down, and with twoelectric contact-pieces of which one is moved and held in contact withthe other by the key or arm as it is arrested by said stop,substantially as set forth.

3. An alarmclock furnished with a stop for arresting the key or arm onthe windingshaft of the alarm. mechanism as it runs down, and withtwoelectric contacts of which one is on the winding-shaft, and is therebymoved and held'in contact with the other contactpiece as the key or armon the wiudingshaft is arrested by said stop, substantiall y asdescribed.

4. An alarm-clock furnished with astop for arresting the key. or arm onthe windingshaft of the alarm mechanism as it runs down, and

ICC

withtwo electric contacts of which one consists of said stop and theother consists of the key or arm on the winding-shaft of the alarmmechanism, as set forth.

5. An alarm-clock having a metallic case and furnished with two electriccontact-pieces, one on and carried by the winding-shaft of the alarmmechanism and in electric connection with the case and the other mountedon and insulated from the case, and so arranged that the contact-pieceon the winding-shaft shall be thereby carried and held in contact withthe insulated contact-piece, and thereby stopped 'as the windingshaftruns'down, substantially as set forth.

6. An alarm-clock having a metallic case, a key or arm on thewinding-shaft of the alarm mechanism, a stop for arresting the key orarm and winding-shaft in running down, two conductor attachments mountedon the case, one in electric connection with the case and the otherinsulated therefrom, and two electric contact-pieces, of which one is inelectric connection with the case and the other is secured to and. inelectric connection with the insulated conductor attachment, and betweenwhich contact-pieces electric connection is established by the action ofsaid key or ,arm when arrested by said stop, substantially as described.

7. An alarm-clock having a case furnished wit-h two metallic rings orhooks by which the clock can be suspended, and ot' whiclronc isinsulated from the other, and two electric contacts which arerespectively in electric connection with the two rings or hooks, andbetween which two contacts electric connection is es" tablished by theaction of the alarm mechanism, substantially as set forth.

8. An alarm-clock having a key or arm on the winding-shalt ot' the alarmmechanism, a stop for arresting the key or arm in running down, twoelectric contact pieces between which electric connection will beestablished by said keyor arm when arrested by said step, and said key,arm, or stop adjustable, so as to cause the winding-shalt with its saidkey or arm to be either arrested or not arrested by said stop,substantially as set forth.

9. An alarm apparatus embracing an electric source, an electro magneticalarm, an alarm-clock having a key or arm on the winding-shaft of thealarm mechanism, a stop by which the key or arm and winding-shaft willbe arrested in running down, two electric contacts between whichelectric connection is es tablished by the action of the key or arm whenarrested by the stop, and electric conductors connecting the electricsource, electromagnetic alarms, and said two electric contacts,substantially as described.

10. An alarm apparatus embracing an electric source, an electric alarm,an alarm-clock having a key or arm on the winding-shaft of the alarmmechanism, a stop for arresting the key or arm in running down, twoconductor attachments mounted. on the case, one in electric connectionwith the ease and the other insulated therefrom, two electriceontacts,ot'

which one is in electric connection with the case and the other issecured to and in electric connection with the insulated conductorattachment, and between which two contacts electric connection isestablished by the action of said key or arm when arrested by said stop,and electric conductors connecting the elec tric source, electric alarm,and said two conductor attachments, substantially as set forth.

11. An alarm apparatus embracing an alarm-clock having a case furnishedwith two metallic rings or hooks by which the clock can be suspended,and of which one is insulated from the other, and with two electriccontacts which are respectively in electric connection with the tworings or hooks, and between which two contacts electric connection isestablished at a predetermined time by the action of the alarm mechanismof the clock, two insulated metallic pins or hooks from which the clockis detachably suspended by said rings or hooks on its case, an electricsource, an electric alarm, and conductors connecting the electricsource, electric alarm, and the two pins or hooks from which the clockis suspended, substantially as described.

In testimony whereof 'we hereunto set our hands, in the presence of twosubscribing wit-

